Steam-trap.



No. 723,691. PATENIED MAR. 24, 19.03.

J. T; LINDSTRO-M. I

STEAM TRAP. Q

APPLICATION FILED NOV. 21, 1902.

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J. T. LINDSTROM. STEAM TRAP.

APPLICATION FILED NOV. 21,1902.

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UNITED STATES ATENT FFICE.

JOHN T. LINDS'IROM, OF ALLENTOWN, PENNSYLVANIA.

STEAM-TRAP.

QPECIFICATION forming part of Letters Patent No. 723,691, dated March24, 0

Application filed November 21, 1902. serial No. 132.289. (No model.) I

To 6055 117720711 it may concern:

Be it known that I, JOHN T. LINDSTROM, a citizen of the United States,residing at Allentown, in the county of Lehigh and State ofPennsylvania, have invented new and useful Improvements in Steam-Traps,of which the following is a specification.

My invention relates to new and useful improvements in traps fordischarging condensed steam from engines or pipes; and its object is toprovide an automatic device of this character which is simple inconstruction and positive in operation.

A further object is to employ a valve adapted to be operated by peculiarfloat-controlled mechanism.

WVith these and other objects in view the invention consist-s in thenovel construction and combination of parts hereinafter more fullydescribed and claimed, and illustrated in the accompanying drawings,showing the preferred form of my invention, and in which Figure 1 isacentral vertical section through the preferred form of myimprovedsteamtrap. Fig. 2is a plan view thereof with the top and valve removed.Fig. 3 is a vertical 5 is arranged in one side of the casting, pref--erably near the top thereof, and a blow-offfi is arranged adjacent tothe bottom of the device. An outlet-pipe 7, preferably formed integralwith the bottom of the casting, is provided with a vertical inlet 8,arranged at the center of the casting, and a tube 9 is threaded orotherwise secured therein and extends u pward vertically into abos's 10,formed upon the lower surface of the cover 4: about a passage 11, closedat the top by a removable screw-plug 12. Abal1-valvel3 normally restsupon and closes the end of tube 9, but is slidably mounted-in theoutlet-pipe 17.

adapted to be unseated therefrom by a slidable sleeve 14, inclosing tube9 and normally resting upon the outlet-pipe 7. A float 15 of suitableform is attached to this sleeve. A pipe 16 extends from a point adjacentto the bottom of the trap .up to the passage 11.

Condensed steam enters the port 5under pressure and as the trapgradually fills the float 15 is raised. The sleeve 14 is carriedtherewith and finally raises valve 15 from its seat. The water is thenpromptly forced upward through pipe 16 into passage 11 and'out throughthe tube 9 and. pipe 7. As the liquid flows from the trap the float 15settles until finally the valve 13 is reseated and the flowis stopped.

In Figs. 3 to 6 I have shown modified forms which operate uponpractically the same principle as the device above described. In thedevice shown in Fig. 3 an inlet 5 and ablowoff 6 are employed. A pipe 16also extends to a valve chamber or passage 11; but the outlet 17 extendshorizontally from said passage and is normally closed bya ball-valve 13,resting upon a removable seat 18. A pin 19 is arranged verticallybeneath the valve 13 and is The lower end 20 of this pin is enlarged toreceive a the upper threaded end of a slidable sleeve 21, mounted upon avertical rod 22, detachably secured to the bottom of the trap. A float15 is secured to the sleeve, and when it is raised by the accumulatingwater the sleeve is carried upward thereby and pressespin 19 againstvalve 13, thus unseating the latter and permitting the water to pass outthrough pipes 16 and l7.

Thevalve chamber or passage 11 extends into the boss 10 of the cover andis provided with a removable plug 23, accessible by unscrewing plug 12.As shown in Fig. 6, however, this second plug 23 can be omitted, and,moreover, the outlet-pipe 17 can be arranged verticallyinstead ofhorizontally, passing upward to the cover j4,.where-it is engaged by atube 24, extending through saidcover. f

- In the foregoing description I have shown the preferred form ofmyinvention; but I do not limit myself thereto, as I am aware thatmodifications may be made therein Without departing from the spirit orsacrificing any of the advantages thereof, and I therefore reserve theright to make such changes as fairly fall Within the scope of myinvention.

Having thus described the invention, What is claimed as new is- 1. Thecombination with a trap having an inlet and an outlet, of a coversecured to the trap and having a valve chamber or passage formedtherein, a pipe opening thereinto and adapted to conduct water underpressure from the bottom of the trap to said chamber, a valve in saidchamber and normally closing the outlet, a sliding sleeve, a guidetherefor, and a float secured to the sleeve and adapted to slide thesame vertically and unseat the valve.

2. The combination with a trap having an inlet and an outlet, of a coversecured thereto and having a valve-chamber therein, a removable plug forclosing said chamber, a valve seated in the chamber for normally closingthe outlet, a pipe for conducting Water, under pressure, from the bottomof the trap to the valve-chamber, a sliding sleeve, a guide therefor,and a float secured to the sleeve and adapted to raise the same andunseat the valve.

3. The combination with a trap having an inlet, an outlet, and avalve-chamber, of a tube extending inward from the outlet and into saidchamber, a valve normally seated upon and closing the tube, a pipe forconducting water under pressure from the bottom of the trap to thechamber, a sleeve slid ably mounted on the tube and extending into thechamber and under the valve, and a float connected to, and adapted tooperate the sleeve.

In testimony whereof I aflix my signature in presence of two witnesses.

JOHN T. LINDSTROM.

WVituesses:

O. W. MASTERS, CHARLES A. JAcoBY.

